(2) 16.5*8= 132 (kg)132 *1.8 = 237.6 237.6-145.2 = 92.4 (yuan)
(3 )92.4+90= 182.4 (yuan) 182.4÷6÷20= 1.52.
It took me a long time. Please give me a satisfactory answer! !
I wish you progress in your study! Good health! Happy every day! Double happiness! All the best! Everything goes well! You did a good job. Go up a flight of stairs!